WO2013145232A1 - 車体下部構造 - Google Patents

車体下部構造 Download PDF

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Publication number
WO2013145232A1
WO2013145232A1 PCT/JP2012/058446 JP2012058446W WO2013145232A1 WO 2013145232 A1 WO2013145232 A1 WO 2013145232A1 JP 2012058446 W JP2012058446 W JP 2012058446W WO 2013145232 A1 WO2013145232 A1 WO 2013145232A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle body
extending
pillar
extending portion
center pillar
Prior art date
Application number
PCT/JP2012/058446
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
信志 鳥居
Original Assignee
トヨタ自動車株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by トヨタ自動車株式会社 filed Critical トヨタ自動車株式会社
Priority to MX2014011603A priority Critical patent/MX348289B/es
Priority to JP2014507198A priority patent/JP5761453B2/ja
Priority to DE112012006141.1T priority patent/DE112012006141B4/de
Priority to CN201280071873.0A priority patent/CN104203727B/zh
Priority to US14/386,057 priority patent/US9290209B2/en
Priority to PCT/JP2012/058446 priority patent/WO2013145232A1/ja
Publication of WO2013145232A1 publication Critical patent/WO2013145232A1/ja

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2036—Floors or bottom sub-units in connection with other superstructure subunits the subunits being side panels, sills or pillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units

Definitions

  • the present invention relates to a vehicle body lower structure.
  • Patent Document 1 describes a vehicle body lower structure including a cross-shaped gusset that covers a cross member provided on a floor panel of a vehicle body and connects the cross member and a pillar of the vehicle body.
  • FIG. 5 is a schematic cross-sectional view for explaining the shape of the gusset 51 provided in the conventional lower body structure 50 of the vehicle body.
  • the gusset 51 provided in the conventional lower body structure 50 is a member that connects the pillar 60 and a cross member (not shown), and has a U-shaped cross-sectional shape opened downward.
  • a broken line C shown in FIG. 5 is a center line of the pillar 60.
  • ridge lines are formed on the left and right of the center line C of the pillar 60.
  • an object of the present invention is to provide a vehicle body lower structure that can efficiently transmit a load from a pillar to a cross member with a simple structure and can reduce the weight of the vehicle body.
  • the present invention is a vehicle body lower structure including a connecting member that connects a cross member extending in a vehicle width direction and a pillar extending in a vertical direction on a floor panel of the vehicle body,
  • the connecting member extends from the upper end of the first extending portion extending along the vertical direction and the upper end of the first extending portion toward the center axis of the pillar in the forward direction of the vehicle body and the backward direction of the vehicle body.
  • a second extending portion connected to the pillar in the vehicle width direction, between the first extending portion and the second extending portion, from the cross member to the pillar A ridge line extending in the direction is formed, the first extending portion is located only on either the front side or the rear side of the pillar body, and the second extending portion is at least It extends from the upper end of a 1st extension part to the central axis of a pillar, It is characterized by the above-mentioned.
  • the first extending portion of the connecting member is only one of the pillar front side and the rear side of the pillar, compared to the case where a conventional U-shaped connecting member is provided,
  • the configuration can be simplified, and the weight of the vehicle body can be reduced by reducing the material of the connecting member.
  • a load applied to the pillar due to a side collision or the like can be efficiently transmitted to the cross member through the ridge line of the connecting member, and the strength of the vehicle body can be ensured.
  • the 2nd extension part is extended until it reaches the center axis
  • the lower side of the first extending portion and the pillar may be separated from each other.
  • the lower side of the first extending portion and the pillar are separated from each other, it is difficult for a load from the pillar to flow to the first extending portion, and the first extending portion is It can suppress that a connection member deform
  • the load from the pillar mainly passes through the ridge line portion having high strength, the load can be transmitted to the cross member more efficiently. Further, the material of the connecting member can be reduced and the weight of the vehicle body can be reduced by the distance from the pillar.
  • a vehicle body lower structure capable of efficiently transmitting a load from a pillar to a cross member with a simple configuration and reducing the vehicle weight.
  • FIG. 1 It is a perspective view which shows the vehicle body lower part structure concerning 1st Embodiment. It is the perspective view which looked at the vehicle body lower part structure concerning 1st Embodiment from the direction different from FIG. It is a schematic sectional drawing for demonstrating the shape of a connection member. It is a perspective view which shows the vehicle body lower part structure concerning 2nd Embodiment. It is a schematic sectional drawing for demonstrating the shape of the connection member in the conventional vehicle body lower structure.
  • the longitudinal direction of the vehicle body is shown as the X-axis direction
  • the vehicle width direction of the vehicle body is shown as the Y-axis direction
  • the height direction (vertical direction) of the vehicle body is shown as the Z-axis direction.
  • the vehicle body lower structure 1 As shown in FIGS. 1 and 2, the vehicle body lower structure 1 according to the first embodiment is, for example, a lower structure of a passenger compartment of an automobile. A cross member 3 extending in the vehicle width direction (Y-axis direction) is disposed.
  • the cross member 3 is a member having a U-shaped cross-sectional shape opened toward the lower side (floor panel 2 side), and two cross members 3 extending along the vehicle width direction on the cross member 3. Edge lines Ma and Mb are formed. The load input to the side of the vehicle body is transmitted in the vehicle width direction mainly by the ridgelines Ma and Mb of the cross member 3. On the side surface of the cross member 3, a reinforcing uneven portion 3a is formed.
  • the left and right sides of the floor panel 2 are joined to the lower part of the rocker 4 extending in the front-rear direction (X-axis direction) of the vehicle body. Both ends in the vehicle width direction are also joined.
  • the rocker 4 has a rocker inner 4A on the vehicle body inner side (floor panel 2 side) and a rocker outer 4B on the vehicle body outer side.
  • the lower end of the center pillar 6 is connected to the rocker 4.
  • the center pillar 6 extending in the up-down direction (Z-axis direction) is positioned substantially at the center in the longitudinal direction of the vehicle body, and is configured in a hollow column shape by combining the center pillar outer and the center pillar inner.
  • FIG. 3 is a schematic cross-sectional view for explaining the shape of the gusset 7.
  • the broken line C shown in FIG. 3 is the central axis of the center pillar 6.
  • the central axis C corresponds to an axis that becomes the center of rotational deformation of the center pillar 6 when the vehicle body receives a load from the side due to a side collision or the like. Or it is good also considering the axis line which passes along the approximate center of the width direction of the center pillar 6 as the center axis C seeing from the vehicle width direction.
  • the gusset 7 is a member extending along the vehicle width direction, and connects the cross member 3 and the center pillar 6 in the vehicle width direction.
  • the gusset 7 includes a first extending portion 9 extending in the vertical direction and a second extending portion 10 extending from the upper end of the first extending portion 9 toward the front of the vehicle body. This is a member having an L-shaped cross section.
  • a ridge line N extending from the cross member 3 toward the center pillar 6 is formed between the first extending portion 9 and the second extending portion 10.
  • the ridge line N extends along the vehicle width direction and is formed so as to be slightly separated from the center pillar 6.
  • the gusset 7 having an L-shaped cross section is connected so as to cover the vehicle body rear side of the cross member 3.
  • Bolt holes 7 a are formed in the gusset 7 and are fixed to the cross member 3 by bolting through the holes 7 a.
  • the gusset 7 is arranged so that the ridge line N of the gusset 7 overlaps the ridge line Ma on the rear side of the vehicle body among the two ridge lines Ma and Mb of the cross member 3.
  • the first extending portion 9 is a member that forms the side surface of the gusset 7, and is connected to the cross member 3, the rocker 4, and the center pillar 6.
  • the first extending portion 9 has a leg portion 9 a connected to the rocker 4 and a pillar connecting portion 9 b connected to the center pillar 6.
  • the leg portion 9 a is provided at the lower end of the first extending portion 9 on the rocker 4 side, and is bent along the upper surface of the rocker 4.
  • the leg 9a is fixed to the upper surface of the rocker 4 by fastening a bolt through the central hole 7c.
  • the pillar connecting portion 9 b is provided at the end of the first extending portion 9 on the side of the center pillar 6, and is bent along the center pillar 6.
  • the pillar connecting portion 9b is fixed to the center pillar 6 by fastening a bolt through the hole 7b.
  • the second extending portion 10 is a portion extending from the upper end of the first extending portion 9 toward the front of the vehicle body.
  • the second extending portion 10 is connected to the center pillar 6 at one end in the vehicle width direction, and is connected to the cross member 3 at the other end in the vehicle width direction.
  • the plate-like second extending portion 10 is extended from the first extending portion 9 in a direction approaching the center axis C of the center pillar 6 when viewed from the vehicle width direction. Yes.
  • the distal end 10 a of the second extending portion 10 reaches the center axis C of the center pillar 6 and is connected to the center pillar 6. No bending or the like is provided on the distal end 10a side of the second extending portion 10, and no ridge line is formed.
  • the second extending portion 10 extends so as to reach a position beyond the central axis C of the center pillar 6 (a position in front of the vehicle body from the central axis C) as viewed from the first extending portion 9. May be.
  • the first extending portion 9 of the gusset 7 is provided with only one of the center pillars 6 on the rear side of the vehicle body.
  • the configuration can be simplified and the weight of the vehicle body can be reduced by reducing the material of the gusset 7.
  • the load applied to the center pillar 6 due to a side collision or the like can be efficiently transmitted to the cross member 3 through the ridge line N of the gusset 7, and the strength of the vehicle body can be ensured.
  • the second extending portion 10 of the connecting member 7 extends to reach the central axis C of the center pillar 6, so that the center pillar 6 rotates around the central axis C due to a load. This can be effectively suppressed and is advantageous in securing the strength of the vehicle body.
  • the vehicle body lower structure 20 according to the second embodiment is different from the vehicle body lower structure 1 according to the first embodiment in that the center pillar 6 and the first extending portion 23 of the gusset 21 are provided. The only difference is that some of them are separated.
  • symbol is attached
  • the second extending portion 24 according to the second embodiment has the same configuration as that of the second extending portion 10 according to the first embodiment, and therefore redundant description is omitted.
  • the rocker 4 side (lower side) of the first extending portion 23 of the gusset 21 according to the second embodiment is formed so as to be separated from the center pillar 6. That is, the pillar extending portion 9b of the first extending portion 9 according to the first embodiment is not formed in the first extending portion 23 according to the second embodiment.
  • the rocker 4 side of the first extending portion 23 is not directly transmitted with a load from the center pillar 6 unless it is deformed. That is, in the gusset 21, it is possible to avoid a load from being directly transmitted from the center pillar 6 to the abdomen of the gusset 21 having a relatively low strength (the lower portion of the first extending portion 23).
  • the load from the center pillar 6 is the first. It becomes difficult to flow into the extended portion 23, and deformation of the gusset 21 starting from the first extended portion 23 can be suppressed. Moreover, since the load from the center pillar 6 mainly passes through the ridge line N having high strength, the load can be transmitted to the cross member 3 more efficiently. Further, the material of the gusset 21 can be reduced and the weight of the vehicle body can be reduced by the distance from the center pillar 6.
  • the present invention is not limited to the embodiment described above.
  • the gusset having an L-shaped cross section may be arranged so that the ridge line is positioned on the front side of the vehicle body from the center axis of the center pillar.
  • the first extending portion is located on the vehicle body front side of the center pillar, and the second extending portion is extended from the upper end of the first extending portion toward the rear of the vehicle body.
  • the cross-sectional shape of the gusset is not limited to the L shape, and other overall shapes, sizes, arrangements, and the like are not limited to those described above.
  • center pillar rocker, cross member, floor panel and the like are not limited to those described above, and the pillar to which the gusset is connected is not necessarily limited to the center pillar.
  • the present invention can be used for a lower body structure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
PCT/JP2012/058446 2012-03-29 2012-03-29 車体下部構造 WO2013145232A1 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
MX2014011603A MX348289B (es) 2012-03-29 2012-03-29 Estructura inferior de cuerpo de vehículo.
JP2014507198A JP5761453B2 (ja) 2012-03-29 2012-03-29 車体下部構造
DE112012006141.1T DE112012006141B4 (de) 2012-03-29 2012-03-29 Fahrzeugkarosserie
CN201280071873.0A CN104203727B (zh) 2012-03-29 2012-03-29 车身下部构造
US14/386,057 US9290209B2 (en) 2012-03-29 2012-03-29 Vehicle body lower structure
PCT/JP2012/058446 WO2013145232A1 (ja) 2012-03-29 2012-03-29 車体下部構造

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/058446 WO2013145232A1 (ja) 2012-03-29 2012-03-29 車体下部構造

Publications (1)

Publication Number Publication Date
WO2013145232A1 true WO2013145232A1 (ja) 2013-10-03

Family

ID=49258597

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/058446 WO2013145232A1 (ja) 2012-03-29 2012-03-29 車体下部構造

Country Status (6)

Country Link
US (1) US9290209B2 (zh)
JP (1) JP5761453B2 (zh)
CN (1) CN104203727B (zh)
DE (1) DE112012006141B4 (zh)
MX (1) MX348289B (zh)
WO (1) WO2013145232A1 (zh)

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US20160159406A1 (en) * 2014-12-09 2016-06-09 Ford Global Technologies, Llc Vehicle body structure

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US9302715B2 (en) * 2014-09-10 2016-04-05 Toyota Motor Engineering & Manufacturing North America, Inc. Vehicles having side support reinforcement gussets
FR3041316B1 (fr) * 2015-09-21 2019-01-25 Renault Sas Structure de caisse d'un vehicule automobile comprenant un renfort de parclose.
US9969435B2 (en) * 2016-09-02 2018-05-15 Toyota Motor Engineering & Manufacturing North America, Inc. Pillar assembly to floor cross support member reinforcement gussets for vehicle side structures
US20180086383A1 (en) * 2016-09-29 2018-03-29 Lippert Components, Inc. Outrigger
CN111483526B (zh) * 2019-07-10 2021-09-07 长城汽车股份有限公司 车身结构

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Also Published As

Publication number Publication date
US20150069778A1 (en) 2015-03-12
JP5761453B2 (ja) 2015-08-12
JPWO2013145232A1 (ja) 2015-08-03
CN104203727A (zh) 2014-12-10
CN104203727B (zh) 2017-11-10
DE112012006141B4 (de) 2023-01-05
MX2014011603A (es) 2014-11-21
US9290209B2 (en) 2016-03-22
MX348289B (es) 2017-06-05
DE112012006141T5 (de) 2015-01-08

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